Oil spill application on SNAP

[falahfakhri]

I think you could calibrate your image to sigma0,

Sentinel-1A GRD product

when you have calibrated the data and you already have Sigma0 you don’t need to select the “radiometric normalization” in the Terrain Correction module. Application of the orbit files is not mandatory but often improves the geometric accuracy of your product. It should be done at the very beginning. Orbit File Calibrate to Sigma0 Speckle Filter Terrain Correction Convert to dB

Radiometric & Geometric Correction Workflow

for SLC data I would suggest TOPS Split Apply Orbit file Thermal Noise Removal Calibration to Beta0* TOPSAR Deburst Radiometric terrain flattening (Speckle filtering) Range Doppler Terrain Correction If you don’t need the phase information you can also download it as a GRD product and only apply the following: Apply Orbit file Thermal noise removal Calibration to Beta0 Radiometric terrain flattening (Speckle filtering) Range Doppler Terrain Correction or (if you don’t have much topography)…